Long ago, Chaya Sar used the abilities she acquired as one of the Ascended to destroy a Wraith fleet attacking her world. The Others forced Chaya to protect only the people of Proculus, who began to worship her as their goddess, and are otherwise unaware of the Wraith. While Chaya was away at Atlantis, two Wraith cruisers and hundreds of Wraith Darts arrived to attack this world. Realizing the threat, Chaya returned and destroyed the fleet with her powers before anyone could be culled. (SGA: "Sanctuary")
As the planet contains no Stargate on its surface, the people of Proculus are relatively isolated from the human population in rest of the Pegasus galaxy; When visited by the Atlantis expedition in 2004, Teyla Emmagan noted that no Athosian could have visited the planet previously.
- ↑ Stargate Atlantis: The DVD Collection issue 68 gives the address for this planet as having two of the same glyphs. While this seems unlikely, it has never been explicitly established on the show that this is either possible or impossible. However, given the address only contains five glyphs (which has been established as being impossible), this address is either incomplete and or incorrect.